Free Tools
The calculators your ERP forgot to build
Free tools for metals manufacturers — scrap calculators, emissions calculators, steel grade converters and more. No account required. Just use them.
Free forever · No account required
What It Actually Does
Scrap Rate Calculator
Work out scrap percentage in seconds. No spreadsheet, no guessing — just the right number.
Emissions Calculator
See your CO₂ impact before you cut. Useful for ESG reporting, tenders, and doing the right thing.
No Account Required
Open the page, enter the numbers, get the answer. Nothing to install. Nothing to log in to.
You shouldn’t have to pay a fortune to do basic maths. We built these calculators because we got tired of seeing people do back-of-the-envelope calculations that ended up wrong. Use them. They’re free.
Scrap Rate Calculator
Standardise scrap calculations across your operation and get consistent scrap-rate and cost reports to support improvement work.
Steel emissions calculator
Find out exactly how much CO₂ your steel orders are generating. Enter the material, weight and process — and stop guessing when sustainability reporting comes round.
Business Case Calculator
Build a business case that actually gets sign-off. Cost and benefit breakdown, exportable as PDF or a shareable link — so the people holding the budget can’t say they didn’t understand it.
Steel Grade Converter
Quickly convert between steel grade naming conventions and equivalents to help match materials and specifications.
Metal Weight Calculator
Calculate the mass of common metal shapes and profiles for steel, aluminium and copper, with results shown in kg and lbs. For reinforcing bar, select round bar and enter the nominal diameter — H10, H12, H16, H20, H25, H32, H40 — to get the weight per metre and total bar weight instantly. Useful for order estimating, bending schedule checks, and material accounting without touching a spreadsheet.
Compliance Checklist
Compliance paperwork is dull. Missing it is expensive. Run through the checklist — certificates, traceability, documentation — and know your deliveries are actually covered.
Material Yield Planner
Plan parts from sheets or slabs while accounting for cutting loss (kerf) to reduce scrap and estimate usable leftover material.
Manufacturing Cost Calculator
Estimate manufacturing costs — material, processing, and labour — so your quotes don’t leave money on the table.
Want more than calculators?
These tools are free because we want you to see what GoSmarter can do. When you’re ready for real-time inventory, automated cert reading, or AI-powered cut planning, we have paid products that go much further.
The free tools work best as a starting point. Use the scrap rate calculator to understand your current waste levels, then try Cutting Plans to see how much you could save with a better cut plan. Use the business case calculator to build the numbers for sign-off, then get started on a free trial.
Go deeper
- Midland Steel Manufacturing Case Study — how a real metals business cut scrap rates and automated cert handling with GoSmarter
- Scrap, Waste & Yield Optimisation — the complete guide to reducing material waste
- Metals Manufacturing Glossary — plain-English definitions for the terms these tools use
What our customers say
"The free calculators are a genuine time-saver — scrap rate, metal weight, emissions. No login, no faff. Just the answer."
— Operations Manager, UK Metals Fabricator
Common Questions
Do I need an account to use the calculators?
No. All free tools work without logging in. Just open the page and start calculating.
Are the calculations accurate enough for production use?
Yes. The calculators use standard industry formulas and have been validated against real production data. They are suitable for estimating, quoting, and production planning.
Can I use these tools on a mobile device?
Yes. All calculators are web-based and work on any device — phone, tablet, or desktop.
How do I report a problem with a calculator?
Contact us via the support page and we will look into it. We also take requests for new calculators — if you need one we haven't built yet, let us know.