Quick answer

Enter current progress and goal (same units). Read completion %, remaining %, and amount left instantly. No account and no data upload.

Formula

  • Completion % = (Progress ÷ Goal) × 100
  • Remaining % = ((Goal - Progress) ÷ Goal) × 100

Introduction

Online calculators exist to remove friction. You should not need a formula cheat sheet for a routine progress check before a stand-up or a donor email.

The calculator on the homepage lives at the top of the homepage in a bento-style layout. It is visible on mobile first, with large tap targets and clear labels.

This guide explains each input, each output, and how to interpret results when progress is below, equal to, or above goal.

For the math behind the scenes, see Percent to Goal Formula.

Inputs and outputs explained

Current progress input: the value you have achieved so far. Examples include dollars raised, pounds lost toward a target, modules completed, or units shipped.

Goal or target input: the full planned amount for the tracking period. It must use the same unit as progress and must be greater than zero.

Instant completion percentage output: progress divided by goal, shown as a percent. This is your “how much is done” figure.

Remaining percentage display: the gap divided by goal, shown as a percent. This is your “how much is left” figure before the deadline.

Amount left: the raw difference goal minus progress, floored at zero when you report remaining work only. Pair it with percents when your audience thinks in dollars or units.

What the calculator does internally

  • Parses progress and goal as numbers
  • Ignores invalid or empty fields until both are valid
  • Applies standard completion and remaining formulas
  • Caps completion display at 100% when progress ≥ goal

No server receives your inputs. The math runs locally with lightweight JavaScript, which keeps the tool fast and private.

Example calculations below the fold on the homepage mirror the same logic for savings, sales, and study goals.

Using the tool step by step

  1. Open the homepage and scroll to the calculator. The panel is labeled and anchored with id="calculator" so shared links jump directly to it.
  2. Enter current progress. Type digits and decimals as needed. The field accepts decimal input mode on mobile keyboards.
  3. Enter goal. Must be positive. If goal is zero, the tool waits for a valid denominator.
  4. Read completion %. Use this on green progress bars and positive team updates.
  5. Read remaining % and amount left. Use these when planning weekly push or explaining the gap to stakeholders.
  6. Share or record. Use the social share control if helpful, or copy the three numbers into email, slides, or your CRM note.

Sample runs to try

Progress 250, goal 400: 62.5% complete, 37.5% remaining, 150 left.

Progress 90, goal 100: 90% complete, 10% remaining, 10 left (friendly goal of 100).

Progress 520, goal 500: 100% complete display, 0% remaining, 0 left, with progress above goal visible in raw fields.

Compare each run with hand math once to build trust, then rely on the tool for weekly updates.