Financial Calculators
11 tools, free and without ads.
Money maths, from the ten-second kind to the kind that informs a decision you will live with for years. Splitting a restaurant bill sits in the same category as working out whether renting beats buying, because the difference is scale rather than subject.
These are the tools where the no-tracking promise stops being abstract. A salary, a loan balance and a monthly budget are among the most sensitive numbers most people have, and none of them leaves your browser here.
Every tool in Finances
Calculate sales tax and total price. Add tax to a price or extract it from a total.
Calculate tip amount, total bill, and per-person split instantly.
Split a bill between people with per-item custom shares and proportional tax/tip.
Convert pay between hourly, weekly, biweekly, monthly, and annual with overtime, estimate take-home, and compare offers.
Calculate monthly payments, total interest and a full amortization schedule — or compare two or three offers side by side and find the break-even.
Compare renting against buying over time — mortgage, taxes, maintenance, appreciation and the opportunity cost of your down payment.
See how your savings grow with compound interest and optional monthly contributions.
Project your retirement savings in today's dollars, and the monthly income they buy from the day you stop until the age you set.
Track income and expenses by category, set monthly budgets, manage savings goals, and view spending trends.
Log hours by project and task, view weekly and monthly summaries, and export for billing.
Keep a checklist of recurring bills that comes back every month — tick each one off as you pay it, and see what each has actually cost.
One-off sums versus things you keep
Answer now, forget after — sales tax, tips, splitting a bill, a paycheck breakdown. You want a number, you act on it, and there is nothing to save.
Decisions with a horizon — loan and mortgage payments, compound interest, rent versus buy. These project forward, which means the assumptions matter more than the arithmetic. Change one rate and re-read the result; a projection that only survives one set of inputs is not telling you much.
Ongoing records — the budget tracker and the timesheet keep data between visits, stored locally in your browser rather than on a server. That is what makes them private, and also what makes them yours to back up: clearing site data clears them.
None of this is financial advice, and every projection here is arithmetic on the numbers you supply rather than a forecast. Tax rules in particular vary by where you are and change without warning — check a figure that matters against the authority that sets it.
Related categories
- Free Online Calculators — Percentages and discounts, which most money questions eventually reduce to.
- Cooking and Kitchen Tools — Grocery lists and meal planning — the household half of a budget.
- Writing and Text Tools — A to-do list, for the follow-ups a budget review generates.