WordPress 7.1+ Ready345 tools in this category

Business Calculators Tools

The arithmetic a small business has to get right: margin and markup, break-even, lifetime value, tax and loan repayments.

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TIMESHEETFree

Time Tracking Calculator

Adds up timesheet entries in any format, shows the decimal and clock totals, and says what the rounding rule adds over a week and a year.

7:45 is not 7.45
$1,088 a year in roundingArithmetic →
VATFree

VAT Calculator

Add VAT or take it out of a gross price. Taking 20 percent off a gross price is the wrong sum, and this shows the fraction that is right.

£120.00 gross → £100.00 net, £20.00 VAT
Net · VAT · grossArithmetic →
ROIFree

ROI Calculator

Return on investment, with the annualised rate beside it, because 30 percent in nine months and 30 percent in five years are not the same result.

ROI 30% · Annualised 41.9%
Plain and compoundedArithmetic →
PAYFree

Salary Converter (Hourly to Annual)

Hourly, daily, weekly, monthly and annual from any one of them, with the 2,080-hour shortcut shown against the hours you actually work.

The shortcut assumes every week is paid
1,800 vs 2,080Arithmetic →
TAXFree

Sales Tax Calculator

Add sales tax, or take it back out of a total, with state and local rates combined the way they are actually applied.

Price $250.00 · Tax $21.25 · Total $271.25
Forwards and backArithmetic →
STATSFree

Sample Size Calculator

Sample size for an A/B test or a survey, with the relative and absolute effect spelled out and what halving the detectable effect costs.

Half the effect, four times the data
Relative vs absoluteArithmetic →
SAVINGSFree

Savings Calculator

Compound savings with monthly deposits, printed in money and in what the money will buy, with each deposit discounted from the month it was actually made.

Real value, not nominal
Goal in monthsCompound →
SHIPPINGFree

Shipping Cost Calculator

Dimensional weight against actual weight, which one is billing you, and what a smaller box would save, because carriers charge for space rather than mass.

2 kg billing as 16 kg
Dim weight winsArithmetic →
TAXFree

Income Tax Calculator

Income tax on bands you enter, with every slice shown, the effective rate next to the marginal one, and the effective rate inside an allowance taper.

Bands tax slices, not incomes
Taper trapBands →
REFUNDSFree

Refund Calculator

What a refund costs against two baselines, since the processing fee and outbound shipping belong to one and the lost margin to the other.

Two baselines, two answers
Fees are keptArithmetic →

Intuitive Workflow

Three steps. Zero onboarding hurdles.

Generate valid, ready-to-paste WordPress code in seconds without configuring a local runtime.

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Configure parameters

Fill in typed fields and toggles; the output updates live and flags invalid values as you type.
Live validation

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Get copy-ready PHP snippets, JSON or text, or download a file straight into your project.
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Answers as you type

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Clean output that follows WordPress conventions, no bloat, and everything computed in your browser.

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$ uploaded: 0 bytes

WordPress-Style PHP

Generated code uses translatable labels, safely quoted values and the core hooks WordPress expects.

$ add_action( 'init', 'register_book' );

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Copy the result, download a ready file, or share a link that restores your settings.

$ download wp-config.php

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