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Free Calculators, Tools & AI Prompts

Accurate calculators for students and exams, plus ready-to-use AI prompt collections for ChatGPT, Gemini, and more — no signup, instant results.

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Tools available
18+
Free tools
Prompt articles
10+
AI prompts
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Start with these tools

Academic

GATE Marks Calculator

Estimate GATE marks from your response sheet, convert to a score out of 1000 with the official formula, and see a rank band. Free, no signup.

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Academic

Cutoff Calculator

Work out your Class 12 cutoff for TNEA engineering, medical, agriculture, or CBSE. Score out of 200 with the formula shown. Free, no signup.

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Academic

SRM CGPA Calculator

SRM IST semester-wise CGPA calculator with subject-wise SGPA builder, ×10 percentage conversion and grade scale. Free, no signup.

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Academic

75% Attendance Calculator

Fixed-75% attendance checker: enter total vs attended classes, get your % plus bunks allowed or classes needed to reach 75%. Free, no signup.

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Academic

IGNOU Percentage Calculator

Calculate your IGNOU result percentage from assignment & term-end marks with the 30/70 method, division badge and course-wise breakdown. Free, no signup.

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Prompt library

Trending Prompts

Copy-and-paste AI prompts for photos, couples, family, and more — ready for ChatGPT, Gemini, and other tools.

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Made for everyday use

Free tools for the numbers life throws at you

No single-purpose apps, no signups, no fees. Just open the site, pick a tool, and get on with your day — whether that's semester results, a job form, or quick everyday maths.

Students, every semester

SGPA to CGPA, a Class 12 cutoff for engineering and medical, and SGPA to percentage — result season, sorted.

Academic tools →

Job & scholarship forms

Convert your CGPA or SGPA into the exact percentage recruiters ask for — with your university's formula.

Convert marks →

Everyday calculations

One growing library for quick answers — and finance, health, and converter tools are on the way.

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Categories

Browse by category

Calculators for exams and academics, plus AI prompt collections you can copy into ChatGPT or Gemini.

Academic12 tools availableConverters2 tools availableEveryday3 tools availableGovernment1 tool availableCouple Photo PromptsAI prompt collectionFamily Photo PromptsAI prompt collectionGod Images AI PromptsAI prompt collectionBirthday promptsAI prompt collection

How it works

An answer in three steps

Every tool on this site follows the same simple flow — learn it once, use it everywhere.

  1. Pick a tool

    Find your calculator from the list — search or browse by category.

  2. Enter your numbers

    Type your marks or values. Nothing leaves your device — no account needed.

  3. Get it instantly

    See the result with a step-by-step breakdown you can copy or share.

Why ToolSimply?

Built for clarity & speed

No clutter, no signups, no waiting. Every tool runs instantly in your browser — even on a budget phone.

  • Accurate formulas

    University-standard calculations, explained step-by-step below every tool.

  • Mobile-first

    Designed for small screens first.

  • Private by design

    Your numbers never leave your device. No accounts, no tracking of inputs.

FAQ

Questions, answered

Everything you might want to know before using our free tools and prompts.

Are these tools really free?

Yes — every calculator, converter, and AI prompt collection on ToolSimply is 100% free, with no limits, no watermarks, and no premium tier. The site stays free without charging you anything.

Do I need to create an account?

No. There are no accounts, no signups, and no logins. Open a tool, enter your numbers, and get your answer — that is the whole process.

Are my numbers uploaded or stored anywhere?

No. Every calculation runs locally in your browser on your own device. Your marks and inputs are never uploaded, stored, or tracked.

Do the tools work on mobile phones?

Yes. Every tool is designed mobile-first with large touch targets, so they work on budget phones just as well as on desktops — no app install needed.

Which tool should I use for my marks?

For semester results, start with the SGPA to CGPA Calculator or the SRM CGPA Calculator (semester-wise, with an SRM grade scale). If a form asks for a percentage, use the SGPA to Percentage Calculator and pick your university formula. For a Class 12 engineering, medical, agriculture, or CBSE cutoff out of 200, use the Cutoff Calculator. For GATE, use the GATE Marks Calculator to turn a response sheet into marks, a score out of 1000, and a rank band. For other objective papers with a wrong-answer penalty — UPSC, NEET, SSC, bank, or MPSC — use the Negative Marking Calculator.

Will more free tools be added?

Yes. New calculators, converters, and AI prompt collections are added regularly. The Tools and Prompts pages always show the full current library.

What are the AI prompts for?

The Prompts library has copy-and-paste collections for ChatGPT, Gemini, and other AI tools — for example couple or family photo prompts. Open an article, copy a prompt, and paste it into the AI tool you already use.

Your next answer is one click away

Free forever, no signup. Pick a calculator or an AI prompt collection and get going in seconds.

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