Available
Length Converter
Convert length between eight metric and customary units, including meters, feet and miles, with adjustable precision and clear formulas.
Unit ConvertersYour everyday digital toolkit
Free Online Tools,
Calculators & APIs
Simple, fast and useful tools for everyday tasks, business calculations and developers.
34 tools are ready: unit converters, construction and financial calculators, plus developer and image utilities. Five API contracts and a live playground are documented; public launch remains pending.
Explore by task Convert unitsCalculate costsWork with data
A useful place to start
Selected tools, ready to use.
Start with a measurement, a material estimate or a JSON document.
Available
Concrete Calculator
Calculate wet concrete volume for rectangular pours in cubic meters and cubic feet, with a separate wastage allowance and mixed-unit dimensions.
Construction CalculatorsAvailable
JSON Formatter & Validator
Format, minify and validate JSON without rounding large numbers or changing string escapes. Copy or download the result locally.
Developer ToolsFind your focus
A category for every kind of task.
From everyday arithmetic to the details of your next project.
Unit Converters
Convert length, area, volume, temperature, and mass between metric and imperial units, with reversible calculations and regional land area tools.
8 available · 0 plannedConstruction Calculators
Estimate concrete volume, floor tile quantities, wall paint coverage, timber CFT, and plywood sheets with adjustable wastage and mixed-unit dimensions.
5 available · 0 plannedFinancial Calculators
Calculate reducing-balance loan EMIs, step-up SIP investment growth, configurable GST breakdowns, and asset-based Zakat with clear payment schedules.
5 available · 2 plannedImage Tools
Compress images and resize photos or signatures to target pixel dimensions and KB limits locally in your browser, with format controls and instant previews.
2 available · 1 plannedDeveloper Tools
Format and validate JSON without rounding large numbers, convert XML or CSV files into JSON trees, and generate static QR codes locally in your browser.
4 available · 1 plannedBusiness Tools
Calculate sequential discounts with optional sales tax, and look up verified Indian PIN codes, bank IFSC branches, and selected Pakistan postal offices.
4 available · 2 plannedEveryday Calculators
Calculate proportions and percentage changes, determine age on cutoff dates, calculate semester GPA, and convert Nepali Bikram Sambat dates.
6 available · 1 plannedMade for builders
Useful APIs.
Fewer moving parts.
Explore location reference and fictional sample data through five documented API contracts and a same-origin playground.
Explore Free APIsTECHIDEA / DEVELOPERSPREVIEW
- 01 Countries & regions Documented
- 02 Indian localities Partial coverage
- 03 Sample users & products Fictional
Five handlers implemented. Public launch and security verification pending.
Read availability notes →Why use TechIdea
The task is enough.
The tool should be simple.
TechIdea is an independent utility platform, built around clear inputs, practical results and transparent limitations.
Clarity comes first
Clear inputs, understandable results and practical explanations. No need to guess what a calculation includes.
Lightweight by design
Focused interfaces and browser-side processing where appropriate. Fewer steps between a question and an answer.
Useful, without the noise
Tools organized around real tasks. Availability is explicit, so you can see what is ready and what is still planned.