All Free Calculators

105 tools across 10 categories — all free, all run in your browser.

Recent additions

2026-05-01 — 1 tool added

2026-05-02 — 1 tool added

2026-05-03 — 1 tool added

2026-05-04 — 1 tool added

2026-05-05 — 1 tool added

Payments

  • Payment Processor Fee Comparison

    Compare Stripe, PayPal, and Shopify Payments fees side by side — enter any sale amount and see the exact net payout for each processor instantly.

    Added 2026-05-01

  • PayPal Fee Calculator

    Calculate exactly how much PayPal takes per transaction and what you actually receive, for any payment type.

    Added 2026-05-13

  • Shopify Fee Calculator

    Calculate Shopify processing fees and transaction fees for any plan — with and without Shopify Payments.

    Added 2026-05-19

  • Stripe Fee Calculator

    Calculate exactly how much Stripe takes and what you actually receive, for any charge amount and card type.

    Added 2026-05-02

SaaS Growth Metrics

  • ARPU Calculator (Average Revenue Per User)

    Calculate Average Revenue Per User (ARPU) from MRR and active users — the core SaaS pricing metric for benchmarking, forecasting, and identifying pricing opportunities.

    Added 2026-06-17

    NEW
  • ARR Calculator

    Convert MRR to Annual Recurring Revenue, calculate YoY growth against last year's ARR, and project ARR 12 and 24 months out at a given monthly growth rate.

    Added 2026-06-17

    NEW
  • ARR Growth Rate Calculator

    Calculate your Annual Recurring Revenue growth rate, T2D3 trajectory, and years to reach your ARR target.

    Added 2026-06-11

    NEW
  • ARR / MRR Converter

    Instantly convert between Monthly Recurring Revenue and Annual Recurring Revenue, plus daily and weekly breakdowns.

    Added 2026-05-14

  • Cash Burn by Department Calculator

    Break down monthly cash burn by department — engineering, sales, marketing, G&A — and see which teams are consuming the most runway.

    Added 2026-06-18

    NEW
  • Burn Multiple Calculator

    Calculate your burn multiple — net cash burn divided by net new ARR — the capital efficiency metric VCs use to evaluate how efficiently you're converting spending into growth.

    Added 2026-06-17

    NEW
  • Magic Number Calculator

    Calculate your SaaS Magic Number — net new ARR divided by prior quarter S&M spend — to measure how efficiently your go-to-market converts sales investment into revenue.

    Added 2026-06-17

    NEW
  • MRR & ARR Calculator

    Calculate monthly recurring revenue, annual recurring revenue and MRR growth rate from your subscriber plan mix.

    Added 2026-05-03

  • SaaS Quick Ratio Calculator

    Calculate your SaaS Quick Ratio — growth MRR divided by lost MRR — to measure whether your business is growing efficiently or just replacing churn.

    Added 2026-06-17

    NEW
  • SaaS Revenue Growth Calculator (MoM/QoQ/YoY)

    Calculate MoM, QoQ, and YoY revenue growth rates, CAGR, and time-to-double to benchmark your startup's trajectory.

    Added 2026-06-17

    NEW
  • Revenue per Employee Calculator

    Benchmark your ARR per FTE against SaaS industry quartiles — and calculate the revenue or headcount needed to hit a target efficiency ratio.

    Added 2026-06-17

    NEW
  • Rule of 40 Calculator

    Calculate your SaaS Rule of 40 score — the sum of revenue growth rate and profit margin that investors use to benchmark health.

    Added 2026-05-17

  • Revenue Run Rate Calculator

    Calculate annual revenue run rate from any period's revenue — project ARR from Q1 earnings, monthly revenue, or partial-year figures with optional growth rate compounding.

    Added 2026-06-17

    NEW
  • Startup Runway Calculator

    Calculate how many months of runway you have left, your burn rate, and when you need to raise or break even.

    Added 2026-05-05

  • SaaS Pricing Calculator

    Calculate optimal SaaS pricing tiers based on your costs, target margin, and willingness-to-pay — with monthly and annual plan analysis.

    Added 2026-06-12

    NEW
  • Sales Velocity Calculator

    Calculate sales velocity — the revenue your pipeline generates per day — from opportunities, win rate, ACV, and sales cycle length.

    Added 2026-06-17

    NEW
  • Unit Economics Calculator

    The complete SaaS unit economics dashboard: CAC payback, LTV:CAC ratio, gross margin, and magic number in one place, for a full efficiency review.

    Added 2026-06-16

    NEW

SaaS Retention Metrics

  • CAC by Channel Calculator

    Break down Customer Acquisition Cost by marketing channel to find which channels are most efficient and where to shift budget.

    Added 2026-05-22

  • CAC Calculator

    Calculate blended Customer Acquisition Cost from ad spend, sales payroll, and tools — plus CAC payback period, and your LTV:CAC ratio if you already know your LTV.

    Added 2026-06-17

    NEW
  • CAC Payback Period Calculator

    Calculate how many months it takes to recover your customer acquisition cost. One of the key unit economics metrics VCs check before investing.

    Added 2026-06-18

    NEW
  • Churn Impact Calculator

    See exactly how monthly churn erodes your MRR over 12 months and what reducing churn by 1% is worth.

    Added 2026-05-06

  • Subscription Churn Revenue Loss Calculator

    Forecast monthly and annual revenue lost to churn — and the MRR needed to break even.

    Added 2026-06-10

    NEW
  • Churn Cohort Analysis Calculator

    Analyze cohort retention, calculate LTV from churn rate, and project how many customers remain after any number of months.

    Added 2026-06-17

  • Customer Concentration Risk Calculator

    Calculate customer concentration risk — % revenue from top customers, Herfindahl-Hirschman Index (HHI), and single-customer exposure — a key due diligence metric.

    Added 2026-06-17

    NEW
  • Gross Revenue Retention Calculator

    Calculate Gross Revenue Retention (GRR) from starting MRR, churn, and contraction — excluding expansion to isolate pure retention.

    Added 2026-06-18

    NEW
  • Customer Health Score Calculator

    Score your SaaS customers by usage, engagement, and NPS to predict churn risk and identify expansion opportunities.

    Added 2026-06-15

    NEW
  • LTV / CAC Calculator

    The fastest way to get your LTV:CAC ratio — enter ARPU, margin, churn, and spend once and get both LTV and CAC together, without filling in two separate calculators.

    Added 2026-05-04

  • Customer LTV Calculator

    Calculate Customer Lifetime Value (LTV), LTV:CAC ratio, and CAC payback period from your ARPU, gross margin, and monthly churn rate.

    Added 2026-06-17

    NEW
  • NPS Calculator

    Calculate your Net Promoter Score from promoter, passive, and detractor counts — with benchmark context.

    Added 2026-05-15

  • Net Revenue Retention (NRR) Calculator

    Calculate Net Revenue Retention and Gross Revenue Retention from starting MRR, expansion, contraction, and churn — the core SaaS retention health metric.

    Added 2026-06-17

    NEW
  • Customer Retention Rate Calculator

    Calculate customer retention rate, churn rate, and implied LTV from your period start, end, and new customer counts.

    Added 2026-06-18

    NEW

Freelance

  • Freelance Rate Calculator

    Calculate the minimum hourly rate you need to charge to hit your income target, accounting for taxes, expenses and non-billable time.

    Added 2026-05-07

  • Invoice Total Calculator

    Build and total an invoice with multiple line items, discount, and tax — then copy the full breakdown with one click.

    Added 2026-05-29

  • Freelance Project Estimator

    Calculate a client-ready project quote from your hourly rate, time estimate, and contingency buffer.

    Added 2026-05-20

  • Salary to Hourly Rate Calculator

    Convert annual salary to hourly, daily and weekly rates — including after-tax take-home for common US tax brackets.

    Added 2026-05-08

Pricing & Margins

  • Percentage Change Calculator

    Calculate percentage change, absolute change, and CAGR between any two values.

    Added 2026-06-18

    NEW
  • Break-Even Calculator

    Find how many units or customers you need to cover fixed costs, and calculate your break-even revenue.

    Added 2026-05-10

  • Break-Even Revenue Calculator

    Calculate the exact revenue needed to cover your fixed costs given your contribution margin — plus safety margin when you enter current revenue.

    Added 2026-06-17

    NEW
  • Contribution Margin Calculator

    Calculate unit contribution margin, CM ratio, and the exact number of units needed to break even or hit a profit target.

    Added 2026-06-17

  • Discount Calculator

    Calculate sale price, discount amount, or reverse-calculate the discount percentage from any original price — plus margin impact after discount.

    Added 2026-06-17

    NEW
  • Gross Margin Calculator

    Calculate gross margin %, gross profit, and markup from revenue and COGS — plus the revenue needed to hit any target margin.

    Added 2026-06-17

    NEW
  • Inventory Turnover Calculator

    Calculate inventory turnover ratio (COGS ÷ average inventory), days sales of inventory (DSI), and sell-through rate — the core metrics for inventory health.

    Added 2026-06-17

    NEW
  • Markup Calculator

    Calculate markup percentage, gross margin, and gross profit from cost and selling price — and understand the difference.

    Added 2026-06-18

    NEW
  • Pricing Elasticity Calculator

    Calculate how a price change affects demand and revenue based on price elasticity — see whether raising your price will increase or decrease total revenue.

    Added 2026-06-17

    NEW
  • Price Increase Impact Calculator

    See how a price increase affects your MRR and calculate the minimum retention rate needed to break even on a pricing change.

    Added 2026-05-18

  • Price Per Unit Calculator

    Calculate and compare price per unit for different package sizes or supplier quotes to find the best value option.

    Added 2026-06-18

    NEW
  • Profit Margin Calculator

    Calculate gross profit, gross margin %, net profit and net margin % from revenue and cost inputs.

    Added 2026-05-09

  • ROI Calculator

    Calculate return on investment (ROI), annualized ROI, net profit, and break-even period for any business investment, marketing campaign, or capital allocation decision.

    Added 2026-06-17

    NEW
  • Segment Gross Margin Calculator

    Compare gross margin and gross profit across up to 4 product lines or business segments side by side.

    Added 2026-06-17

  • Pricing Tier Comparison Calculator

    Compare 2–3 SaaS pricing tiers and find which tier maximizes revenue at different conversion rates — before you commit to a pricing page.

    Added 2026-05-24

  • Weighted Average Calculator

    Calculate weighted averages for grades, prices, rates, or any metrics — see each component's contribution to the overall result instantly.

    Added 2026-06-18

    NEW

Marketing

  • Average Order Value Calculator

    Calculate average order value (AOV), revenue per visitor, and the revenue impact of raising your AOV.

    Added 2026-06-18

    NEW
  • Conversion Rate Calculator

    Calculate your website conversion rate and model the exact revenue impact of improving it — for any funnel stage, from visitor to paid customer.

    Added 2026-06-17

    NEW
  • Email Marketing ROI Calculator

    Calculate the revenue, ROI, and cost per conversion for any email campaign — from list size through opens, clicks, and conversions.

    Added 2026-05-27

  • Email List Growth Rate Calculator

    Calculate your email list growth rate, monthly decay, and how many new subscribers you need to reach your target list size.

    Added 2026-06-17

    NEW
  • Revenue per Lead Calculator

    Calculate revenue per lead (RPL) by channel — compare marketing channel profitability, cost per lead vs revenue generated, and leads needed to hit revenue targets.

    Added 2026-06-17

    NEW
  • Ad ROAS Calculator

    Calculate Return on Ad Spend (ROAS), breakeven ROAS from your gross margin, and target ROAS for any profit goal — for Google Ads, Meta, or any paid channel.

    Added 2026-06-17

    NEW
  • Sales Funnel Calculator

    Model your full sales funnel — from leads to closed revenue — and find your weakest conversion stage.

    Added 2026-06-18

    NEW
  • Sales Quota Calculator

    Calculate how many deals, leads, and pipeline you need to hit your annual revenue target based on ACV and close rate.

    Added 2026-05-25

Finance

  • Budget Variance Calculator

    Calculate budget variance in dollars and percentage, and determine whether the variance is favorable or unfavorable for revenue or expense lines.

    Added 2026-06-18

    NEW
  • Business Loan Calculator

    Calculate monthly payment, total interest, and total cost of a business loan — model SBA loans, term loans, and lines of credit with standard amortization.

    Added 2026-06-17

    NEW
  • Cash Conversion Cycle Calculator

    Calculate Days Inventory Outstanding, Days Sales Outstanding, and Days Payable Outstanding — and combine them into the Cash Conversion Cycle to measure working capital efficiency.

    Added 2026-06-17

    NEW
  • Operating Cash Flow Calculator

    Calculate Operating Cash Flow (OCF) from net income, depreciation, and working capital — plus free cash flow and cash conversion ratio.

    Added 2026-06-17

    NEW
  • COGS Calculator

    Calculate Cost of Goods Sold (COGS) from inventory and purchases, then compute gross profit and gross margin.

    Added 2026-06-18

    NEW
  • Current Ratio Calculator

    Calculate current ratio, quick ratio, and cash ratio to measure your business's short-term liquidity.

    Added 2026-06-18

    NEW
  • Debt-to-Equity Ratio Calculator

    Calculate debt-to-equity ratio, equity ratio, and financial leverage from your balance sheet figures.

    Added 2026-06-18

    NEW
  • DSCR Calculator

    Calculate Debt Service Coverage Ratio and find the maximum loan your cash flow can support.

    Added 2026-06-18

    NEW
  • Days Sales Outstanding (DSO) Calculator

    Calculate Days Sales Outstanding to measure how quickly you collect accounts receivable and how much cash is tied up in unpaid invoices.

    Added 2026-06-17

  • EBITDA Calculator

    Calculate EBITDA from revenue, COGS, and operating expenses — plus EBITDA margin, EBIT after depreciation, and implied valuation at a given EBITDA multiple.

    Added 2026-06-17

    NEW
  • Free Cash Flow Calculator

    Calculate free cash flow (operating cash flow minus capital expenditures), FCF margin, and FCF yield — the metric investors use to assess true cash generation.

    Added 2026-06-17

    NEW
  • Financial Ratios Calculator

    Calculate six key financial ratios in one dashboard — profitability, liquidity, leverage, and efficiency from a single balance sheet and income statement.

    Added 2026-06-18

    NEW
  • Gross Profit Margin Calculator

    Calculate gross profit, gross margin %, and markup from revenue and COGS — with industry benchmark guidance.

    Added 2026-06-18

    NEW
  • Invoice Early Payment Discount Calculator

    Calculate early payment discount savings, net payment amount, and the annualized cost of passing on a 2/10 net 30 discount.

    Added 2026-06-18

    NEW
  • IRR Calculator — Internal Rate of Return

    Calculate the Internal Rate of Return (IRR) for any series of cash flows — evaluates the profitability of investments, projects, and business decisions.

    Added 2026-06-18

    NEW
  • MIRR Calculator (Modified IRR)

    Calculate Modified Internal Rate of Return — a more accurate investment return metric that corrects IRR's reinvestment rate assumption.

    Added 2026-06-18

    NEW
  • Net Profit Calculator

    Calculate gross profit, operating income, and net profit with full margin breakdown from revenue through taxes.

    Added 2026-06-18

    NEW
  • NPV Calculator (Net Present Value)

    Calculate net present value from an initial investment and up to 5 years of cash flows — includes profitability index and simple payback period.

    Added 2026-06-17

    NEW
  • Operating Leverage Calculator

    Calculate your degree of operating leverage (DOL) — how much a percentage change in revenue amplifies your operating income.

    Added 2026-06-18

    NEW
  • Payback Period Calculator

    Calculate payback period in years and months — simple and discounted — to determine how long until an investment breaks even and starts generating net returns.

    Added 2026-06-17

    NEW
  • Revenue Growth Rate Calculator

    Calculate year-over-year revenue growth rate, multi-year CAGR, and Rule of 40 score for SaaS and business performance tracking.

    Added 2026-06-18

    NEW
  • Return on Assets Calculator

    Calculate Return on Assets (ROA) and decompose it into net margin and asset turnover using the DuPont framework.

    Added 2026-06-18

    NEW
  • Return on Equity (ROE) Calculator

    Calculate Return on Equity to measure how efficiently a company generates profit from shareholders' capital investment.

    Added 2026-06-17

  • Rule of 72 Calculator

    Use the Rule of 72 to estimate how long it takes to double your money at a given annual return rate — and find the rate needed to double by a target date.

    Added 2026-06-18

    NEW
  • Times Interest Earned Calculator

    Calculate the Times Interest Earned (TIE) ratio to measure how comfortably your EBIT covers annual interest payments.

    Added 2026-06-18

    NEW
  • WACC Calculator

    Calculate Weighted Average Cost of Capital — the blended rate a company must earn on its assets to satisfy all capital providers, equity and debt.

    Added 2026-06-18

    NEW
  • Working Capital Calculator

    Calculate working capital, current ratio, and quick ratio from your balance sheet — the core liquidity metrics for measuring a business's short-term financial health.

    Added 2026-06-17

    NEW

Valuation

  • DCF Calculator (Discounted Cash Flow)

    Calculate the present value of future cash flows using your discount rate — get intrinsic value, NPV, and terminal value in seconds.

    Added 2026-06-18

    NEW
  • EBITDA Multiple Calculator

    Estimate enterprise value and equity value using EV/EBITDA and EV/Revenue multiples.

    Added 2026-06-18

    NEW
  • Enterprise Value Calculator

    Calculate Enterprise Value (EV) and key acquisition multiples — EV/EBITDA and EV/Revenue — from market cap, debt, and cash.

    Added 2026-06-18

    NEW
  • Equity Dilution Calculator

    Model how a funding round dilutes founder and investor ownership — calculate post-money valuation, new shares issued, and your diluted ownership percentage.

    Added 2026-06-17

    NEW
  • P/E Ratio Calculator

    Calculate trailing and forward P/E ratios, earnings yield, and PEG ratio to assess stock valuation relative to earnings.

    Added 2026-06-18

    NEW
  • Price-to-Sales Ratio Calculator

    Calculate P/S ratio, implied valuation at any multiple, and growth-adjusted P/S for startup and SaaS company comparisons.

    Added 2026-06-17

  • TAM SAM SOM Calculator

    Calculate Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM) for investor presentations and market sizing.

    Added 2026-06-17

    NEW

Tax & Compliance

  • Freelance Tax Estimator

    Estimate your annual self-employment tax, federal income tax, and quarterly estimated payments as a freelancer or independent contractor.

    Added 2026-06-17

  • Payroll Tax Calculator

    Estimate employer payroll taxes — FICA (Social Security + Medicare), FUTA, and total employment cost — for any employee salary in the US.

    Added 2026-06-18

    NEW
  • VAT & Sales Tax Calculator

    Add or remove VAT / sales tax at any rate. Switch between countries or enter a custom rate.

    Added 2026-05-12

HR & People

  • Commission Calculator

    Calculate sales commission earned, total compensation, and OTE attainment from revenue and commission rate.

    Added 2026-06-18

    NEW
  • Employee Cost Calculator

    Calculate the true total cost of an employee — salary plus payroll taxes, benefits, and bonus — and see the cost multiplier over base pay.

    Added 2026-06-17

  • Employee Turnover Rate Calculator

    Calculate annual employee turnover rate, retention rate, and total cost of turnover including replacement costs.

    Added 2026-06-18

    NEW
  • Payroll Cost Calculator

    Calculate the true employer cost of hiring: salary plus payroll taxes (FICA, FUTA, SUTA) and benefits — so you know the real budget impact of each hire.

    Added 2026-06-17

    NEW
  • Employee Turnover Cost Calculator

    Estimate the true cost of employee turnover — separation, vacancy, recruitment, and onboarding — as a total and as a percentage of payroll.

    Added 2026-06-18

    NEW