General Tools

Tip splitter, compound interest, GPA, 1RM, heart rate zones, fuel cost, password generator and more.

General everyday tools

The general tools section collects calculators that do not fit neatly into finance, health or math — but are useful in everyday life: tip splitting at a restaurant, compound-interest projections, percentage discounts on offers, GPA and grade-average calculators for students, one-rep-max for strength training, target heart rate for cardio, fuel-cost planning for road trips, and a secure random password generator.

Most of these are quick utilities — open the page, type your numbers, get a result.

When to use these tools: Use these tools for everyday checks: splitting a restaurant bill, planning a road-trip fuel budget, calculating semester GPA, picking the right weight at the gym, or generating a strong password for a new account.

Discount / % Off Calculator

Calculate sale price with optional additional discount stacking

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How Discount Calculator is calculated

Final = Price × (1-d1) × (1-d2)

Second discount is applied on already discounted price.

All general everyday tools on this page

Tap any calculator below to load it in place. Every tool on this page is free, runs in your browser and does not need a sign-up.

Restaurant tip and per-person total when splitting a bill across multiple people.
Project the future value of a one-time investment with selectable compounding frequency.
Final price after a percentage discount, and the amount saved.
Weighted GPA from course credits and grade points — supports common Indian and US grading scales.
Required final-exam mark to achieve a target overall grade, given current weighted marks.
Estimate your one-rep maximum from a sub-maximal lift using common strength-training formulas.
Training-zone heart rate ranges from your age and resting heart rate (Karvonen method).
Total fuel cost for a trip from distance, mileage and current fuel price.
Generate strong random passwords with selectable length and character classes (letters, numbers, symbols).

A note on accuracy

The numbers produced by these calculators are estimates based on the inputs you provide and the formulas shown in each tool's "How it is calculated" section. They are intended for planning, learning and quick checks — not as legal, medical, tax or investment advice. For decisions that have real financial, legal or health consequences, please consult a qualified professional. See our disclaimer for the full statement.