The Complete Guide to DoCalc Calculators

Revenue

MRR to ARR Calculator

Convert monthly recurring revenue to annual run-rate.

Calculate → Efficiency

CAC Payback Period

Months to recover customer acquisition cost.

Calculate → Cash

Burn Rate & Runway

Net burn, gross burn, and months of runway left.

Calculate → Efficiency

LTV:CAC Ratio

Lifetime value against acquisition cost.

Calculate → Overview

Unit Economics Dashboard

Margin, payback, and LTV:CAC in one view.

Calculate → Retention

Churn Rate

Monthly and annualized customer & revenue churn.

Calculate → Benchmark

Rule of 40

Growth rate plus profit margin, scored.

Calculate → Revenue

MRR Calculator

Track new, expansion, contraction, and churned MRR movement.

Calculate → Revenue

ARR Calculator

Build ARR bottom-up from customers and contract value.

Calculate → Efficiency

CAC Calculator

What it costs to acquire one new customer.

Calculate → Retention

LTV Calculator

Customer lifetime value, no CAC required.

Calculate → Retention

Net Revenue Retention

How well you retain and grow existing revenue.

Calculate → Profitability

Gross Margin

Revenue minus cost of goods sold, as a percentage.

Calculate → Retention

Gross Revenue Retention

The stricter, expansion-excluded retention metric.

Calculate → Revenue

ARPU Calculator

Average revenue per user, monthly and annualized.

Calculate → Revenue

ACV Calculator

Convert a multi-year contract into its annual value.

Calculate → Revenue

Expansion Revenue

Revenue added from upsells and cross-sells.

Calculate → Efficiency

Quick Ratio

Growth MRR divided by lost MRR.

Calculate → Efficiency

Magic Number

Sales & marketing efficiency from revenue growth.

Calculate → Profitability

Net Margin

The full bottom-line profitability number.

Calculate → Profitability

EBITDA Margin

Core operating profitability, before interest, taxes, D&A.

Calculate → Illustrative

SaaS Valuation

An illustrative estimate from ARR, growth, and NRR.

Calculate → Retention

Customer Health Score

A weighted score from usage, support, NPS, payment.

Calculate → Engagement

Stickiness Ratio

DAU/MAU — how much of your audience returns daily.

Calculate → Equity

Cap Table Dilution

See how a new funding round dilutes existing shareholders.

Calculate → Equity

SAFE Note Conversion

See how a SAFE converts to shares at your next priced round.

Calculate → Equity

Vesting Schedule

See how many shares are vested at any point in a grant.

Calculate → Efficiency

ARR per Employee

A key SaaS efficiency and productivity benchmark.

Calculate →

Mortgage

Mortgage Payment Calculator

Full monthly payment breakdown — P&I, taxes, insurance, PMI.

Calculate → Debt

Loan Payoff Calculator

See how extra payments shorten a loan's term and cut total interest paid.

Calculate → Investing

Compound Interest Calculator

Project how savings or investments grow over time with regular contributions.

Calculate → Debt

Auto Loan Calculator

Monthly car payment including sales tax, down payment, and trade-in.

Calculate → Debt

Debt Payoff Calculator

Compare the snowball and avalanche strategies across multiple debts.

Calculate → Debt

Credit Card Payoff Calculator

Fixed payment vs. minimum-only — see the real interest cost.

Calculate → Housing

Home Affordability Calculator

The maximum home price your income and debts support.

Calculate → Retirement

Retirement Savings Calculator

Project your 401(k)/IRA balance at retirement, with employer match.

Calculate → Saving

Savings Goal Calculator

How much to save monthly to hit any target by a date.

Calculate → Net Worth

Net Worth Calculator

Add up your assets and liabilities into one number.

Calculate → Saving

Emergency Fund Calculator

Your target based on real expenses, and how long it'll take.

Calculate → Investing

Investment Return Calculator

Calculate the annualized return (CAGR) on any investment.

Calculate → Mortgage

Refinance Calculator

Break-even point and lifetime savings of refinancing.

Calculate → Housing

HELOC Calculator

How much you can borrow against your home's equity.

Calculate → Housing

Rent vs. Buy Calculator

Which costs less over your specific timeframe.

Calculate →