Numbers you can trust, before you commit.

Monthly payment, total interest, and a full payoff schedule.

Add tax on top of a price, or back it out from a total.

Project savings growth with recurring contributions.

Split a bill and tip evenly across any group size.

Convert between 40+ currencies using live exchange rates.

Project SIP returns with optional annual step-up.

See how long a corpus lasts under regular withdrawals.

Future value of a one-time investment, year by year.

Annualized growth rate between any two portfolio values.

Blended buy price across lots, plus shares to hit a target average.

How much to invest monthly, and in what mix of assets, to hit a wealth target on time.

Interest and payoff total with no compounding, year by year.

Sale price from a discount, or sell price from a cost and markup.

Cement bags, sand, and aggregate for slabs and footings.

Acres, hectares, sq ft, sq m, cents, bigha, and guntha.

Material counts for a wall, minus doors and windows.

Liters, containers, and cost for walls and ceilings.

Tiles, boxes, and cost for any room and tile size.

Sloped roof area, shingle bundles, and underlayment by pitch.

Clean, validate, and explore JSON in an interactive tree.

Encode, decode, and inspect tokens in the browser.

Test patterns against sample text with live highlights.

Convert HEX/RGB/HSL and check accessible contrast.

Convert between Unix time, ISO 8601, and local dates.

Bulk-generate UUIDs or random strings with a custom charset.

Estimate kidney function from serum creatinine using the race-free CKD-EPI 2021 equation.

Body mass index, weight category, and a healthy weight range for your height.

Resting metabolic rate and daily calorie needs by activity level.

Estimated due date and current gestational age from your last period or conception date.

Estimate body fat percentage from height, neck, waist, and hip.

Rewrite a paragraph in a different tone with synonym and structure control.

Word, character, and sentence counts plus a Flesch readability score.