Are the calculators free to use?

Yes, every tool on the site is free with no account, no trial period and no usage limit.

Do the tools work in metric and imperial units?

Most of them do. Where a tool supports both, there is a unit toggle near the top of the inputs and metric is listed first.

Can I download or print my results?

Yes. Most calculators include a PDF export that captures your inputs, the results and any charts, so you can attach it to a report.

Who builds these calculators?

They come out of hands on work in geophysics, geodesy and field inspection, which is why the geology, geophysics and construction tools go deeper than the usual one box converter.

Can I request a calculator that is not here yet?

Yes, requests are welcome and they genuinely shape what gets built next. Send it through the contact page.

Free to use, no sign up

Free tools and software for real world problems

Built by a working geoscientist and field inspector, not scraped from a formula sheet. Over 400 calculators, thirteen connected suites, and single page apps for geology, geophysics, drilling, construction and mining, with project memory and one click reports.

PDF tools

Convert, edit, organise and secure PDFs. Nothing is uploaded, it all runs in your browser, so your files never leave your device.

Convert to PDFImages, Word, Excel Convert from PDFTo images, text and tables Organise pagesMerge, split, drawings Edit and stampText, forms, numbering Secure and optimisePasswords and file size Inspect and compareMetadata, diffs, OCR

See all PDF tools

Browse by category

Pick a field and jump straight to the tools that fit it. New categories get added as the site grows.

Geology

Dip, hardness, grain size, faults, rock density and geologic time.

Geophysics

Seismic velocity, AVO, rock physics, impedance and reflection tools.

Construction

Rebar, concrete, slope stability, retaining walls, asphalt, cut and fill, and pile capacity.

Drilling Engineering

Mud weight, hydraulics, torque and drag, kick tolerance, casing design and directional survey math.

Conversion

Length, slope, density, pressure, flow rate and stress unit conversions.

Geotechnical

SPT corrections, bearing capacity, settlement, Atterberg limits and soil density for foundations.

PDF generators

Fill in the fields, download a clean report you can hand over.

Tool Suites

Each suite is a workbench of tools built for one workflow, with project memory that carries your inputs between them. See everything inside each suite.

Apps

Single page software that does a whole job: load your data, get a finished, printable result. Browse all apps.

Contour Map Generator

Paste XYZ survey points, get a colored contour map with labels, live value readout and PNG export.

Cross Section Maker

Boreholes in, correlated geological section out, with water table and vertical exaggeration.

3D Well Path Viewer

Rotate boreholes and surveyed well paths in a true 3D scene, right in the browser.

Report Studio

Every calculation you saved across the suites, assembled into one branded PDF report.

LAS to CSV Converter

Well log files become clean spreadsheets with curve names as columns and nulls blanked.

SEGY Header Inspector

Decode seismic file headers and sanity check the trace count before loading anything.

CSV Cleaner

Mixed delimiters, junk lines, and duplicates become one tidy file ready for any tool.

Groundwater Simulator

Live physics: watch a cone of depression grow around a pumping well you control.

Seismic Wave Simulator

Fire a source and watch waves reflect and refract through layered ground, live.

Phone Clinometer

Your phone as a compass clinometer: strike and dip from the sensors in your pocket.

Coordinate Converter

Latitude and longitude to UTM and back, exact on the WGS84 ellipsoid, single or batch.

Batch Runner

Run any calculator on this site over a whole pasted CSV, row by row, automatically.

LAS File Viewer

Open a LAS well log and see real tracks: gamma, resistivity on log scale, density.

SEG-Y Trace Viewer

Draw the section inside a SEG-Y file as wiggles or grayscale, IBM floats decoded.

Synthetic Seismogram Studio

Paste velocity and density logs, get reflectivity and Ricker wiggles with live frequency.

GPS Waypoint Logger

Walk the site, record stations with notes, export UTM CSV ready for contouring.

Canada Map

All thirteen provinces and territories by population, land area and density, with a map for each one.

United States Map

All fifty states and DC by population, land area and density, with satellite imagery and a map for each state.

Outcrop Photo Annotator

Scale bar, north arrow, and labels on your field photo, exported as PNG.

Study Area Map Generator

Locator panels, extent boxes and your own sites, exported as PNG, SVG or PDF.

Stereonet Plotter

Equal area net with great circles, poles, density contours, mean plane, and a rose diagram.

Everyday essentials

Quick tools for the arithmetic that comes up on any job and at home. Metric and imperial, working shown, no sign up.

Unit Converters Maths Geometry Power and Energy Date and Time Money and Rates Home and DIY

See all essentials

Why CalculatGeek

Real software, free

Over 400 calculators, thirteen connected suites, and single page apps run entirely in your browser. Or install the site like an app: the field tools keep working with no signal at all, and your data still never leaves your device. See field mode.

A project that remembers

Press Save inputs on any suite tool and the project follows you: sessions restore, named values carry between tools, and the whole thing exports as a file.

From data to deliverable

Every tool prints a clean PDF, every calculation shares as a link that opens prefilled, tools embed on your own site, and Report Studio assembles whole projects into one document.

Built by practitioners

Made by a working geoscientist and field inspector, not scraped from a formula sheet. Every method is standard, published, and checked against worked references before it ships.

Common questions

Is everything really free?

Yes. Every calculator, suite, and app on this site is free with no account and no trial clock. The project lives in your browser, not on a server we could charge you for.

Do my files get uploaded?

No. SEG-Y seismic, LAS well logs, CSV surveys, and everything else parse locally in your browser. Confidential data stays exactly where it started.

What is a tool suite?

A set of tools built for one workflow, linked by a bar at the top of each one and sharing project memory. Enter a value once and it can follow you through the whole job.

How do I save and share my work?

Press Save inputs in the Project bar on any tool: sessions restore on your next visit, any calculation shares as a link that opens prefilled, and Report Studio turns the saved project into one PDF.

Can I use the results professionally?

The methods are standard and published, and every tool is verified against worked references. Screening results still deserve site specific verification before final design, and the printed reports say so.