Make smarter choices with free interactive tools.
Explore 672 free calculators and browser utilities for work, money, study, construction and everyday decisions—alongside private PDF, document, image, video and audio tools.
Choose a tool category
Find the right calculator, file converter or practical guide without searching through one enormous list.
Archive tools
Create, extract, protect and convert ZIP, RAR, 7Z and TAR.GZ archives privately.
Explore category →Pakistan calculators
Tax, electricity, solar, vehicles, education, property and everyday Pakistan decisions.
Explore category →Global calculators
Finance, business, savings, loans, technology and everyday calculators for any currency.
Explore category →PDF tools
Merge, split, organize, convert, watermark, inspect and secure PDF documents privately.
Explore category →Document & data
Word, DOCX, Markdown, text, HTML, CSV, Excel and JSON browser tools.
Explore category →Image tools
Convert, compress, resize, crop, watermark and clean image metadata on your device.
Explore category →Media tools
Video, audio and subtitle converters, compressors, trimmers and editors without uploads.
Explore category →Generators
Codes, documents, career tools, office generators and social-content helpers.
Explore category →Practical guides
Clear explanations, worked examples, limitations and reliable decision-making guidance.
Explore category →Global calculators for money, dates, study and more
New tools and expanded modes cover payment and annuity estimates, retirement scenarios, date planning, construction quantities, math and exam practice.
Payment
Estimate a fixed periodic loan payment or annuity payout from principal or present value, annual interest rate, repayment term and payment frequency.
Use free tool →EverydayDate From Today
Find future or past dates from day, week or month offsets and calculate elapsed days between dates.
Use free tool →Money401(k)
Project 401(k) growth, compare a Roth and traditional contribution under entered tax assumptions, or estimate taxes and penalties on a planned withdrawal.
Use free tool →MoneyInterest
Calculate interest earned and ending balances with simple or compound growth, CD or FD nominal rates, quoted APY, or an implied rate from two balances.
Use free tool →EducationRatio
Simplify, scale, compare and convert ratios between equivalent ratios, fractions and percentages with a clear mode for each task.
Use free tool →EducationRight Triangle
Solve a right triangle from two legs, a hypotenuse and leg, or a leg and acute angle; show sides, angles, area and perimeter.
Use free tool →HomeConcrete
Estimate slab, Sonotube, and concrete block volume, add a project price, or total block weight from a supplied per-block weight.
Use free tool →HomeGravel & River Rock
Estimate gravel, crushed stone, pea gravel or river rock volume and approximate weight from area, depth and material density.
Use free tool →EducationGPA
Calculate weighted average GPA from course grade points and credit weights.
Use free tool →EducationAP World Score
Estimate an AP World History: Modern composite percentage from section performance using the current College Board exam weights.
Use free tool →EducationScientific Notation
Convert a number to scientific notation and show its coefficient and base-10 exponent.
Use free tool →EverydayPeriod
Estimate the next menstrual period and cycle dates from the first day of the last period and usual cycle length.
Use free tool →Recently upgraded: Mortgage PaymentDiscountWork HoursOvertime Pay
Useful calculators for local decisions
Start with frequently needed Pakistan calculators. Every result explains the assumptions behind it.
Explore useful calculators
Answers and utilities you can understand—and trust.
SolvePilot combines transparent calculators with private browser tools. We explain assumptions, limitations, privacy and practical next steps.
- 01Transparent by designSee how calculations and conversions work.
- 02Pakistan-first and globally usefulLocal calculators plus universal file utilities.
- 03Fast and privateSupported processing happens on your device.