Use This Many Teaspoons Of Microgreen Seed For Perfect Trays: New Microgreen Seed Density Calculator

In the previous microgreen seed density calculator I published the output is in grams. The difference with the microgreen seed density calculator presented below is the output is in teaspoons, tablespoons or quarter cups.

Because the new microgreen seed density calculator will provide the seeding rate in teaspoon, tablespoon or quarter cup (depending on the seed variety) units it makes it easier for those without a scale to seed their microgreen trays perfectly. 

Home Microgreens Swivel Measuring Spoon set with seed

I suggest using steep or vertical-sided measuring spoons when scooping out your microgreen seeds. The steep-sides of the spoons are more accurate with round seeds (especially larger seeds) than spoons that are shaped more like rounded bowls.

I do have the measuring spoon set available in the Home Microgreens Store.

How to Use the Home Microgreen Seed Density Calculator

First, measure the average length and width of the microgreen tray you are going to plant (in inches).

Important Step

Don't necessarily measure the edges of the tray, but rather, the extent of the soil in the tray. You want to calculate the plantable surface area in the tray. The planting surface may be smaller if the sides of your trays slope and are not filled with soil.


Once you have measured the length and width of your planting area, adjust the slider bars on the calculator to the plantable dimensions of your tray. The bars move in quarter-inch intervals.

You'll notice that values under each of the microgreen varieties below the sliders will change as the sliders move.

The value presented under each of the microgreen varieties is the volume of seed you should plant in your microgreen tray. The calculator may return the seeding volume in teaspoons, tablespoons, or quarter cups depending the microgreen variety. Be sure to double check.

For Reference

3 teaspoons = 1 Tablespoon

4 Tablespoons = 1 Quarter Cup

Note: The calculator provides the seeding rate in level teaspoons, tablespoons, or quarter cups, not rounded or heaped.

If the returned value is 0.3 teaspoons, it is ok to mound seeds on the 1/4-teaspoon spoon. Or if the value is 2.8 teaspoons, leave a little room in a tablespoon.  

Do You Have a Round Tray?

If so, measure the diameter of your planting area (in inches) and divide that by 2. This is the radius of the tray.

Multiple the radius by Pi (3.14) to find the area of the planting area.

Take the square root of the planting area and enter this value into the Home Microgreens Seed Calculator as both the length and width.

Don't want to do the math?

The Home Microgreens Seed Density Course (discussed below) has a calculator that does all the math for you.

Rather have the seeding rate in grams? Click here to visit that seed density calculator.

Home Microgreens Seed Density Course

I have created a new mini-course that includes two seed calculators. One provides recommended seeding densities in grams, and the second like the one above gives you the seeding rate in teaspoons, tablespoons, or quarter cups.

The calculators in the course contain the seed densities of almost 50 different microgreen varieties instead of the 13 above. Plus I will be adding more moving forward. 

You will also get updates when the calculators are updates or a new variety is added. 

The course contains 4 video lessons, the two calculators, links to papers discussing where the most nutrition is found in greens, and worksheets to record your seeding volumes or weights. 

You will get lifetime access to the course and discounts to features to be added in the future.

Home Microgreens Seed Density Course & Calculators

Course is available for those in the US and Internationally!

Course contains:

  • Four video lessons
  • Two seed calculators (grams & volume)
  • 40+ microgreen varieties in calculator.
  • Two worksheets to write down your seed weights or volumes.
  • Links to peer-reviewed papers.
  • Lifetime access & updates
  • Future discounts on other premium content
  • Money back guarantee
US Product Page
International Product Page

Author of this Article is Todd

Todd is the founder of Home Microgreens & the Home Microgreens store. He also writes for several other websites, including

His microgreens have appeared in Better Homes & Garden magazine and other websites.
Todd worked at a large farm market, garden & nursery center for 20-years. Somehow he snuck off to become a geologist and professor before coming back to his senses to write & lecture about microgreens and gardening. He will be in the garden, trout stream, or on a mountain trail with his Springer Spaniel Caden when not at the computer.

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Home Microgreens Also Offers the Following

Microgreen eBook

A comprehensive microgreen ebook that details the principals of growing microgreens at home. Several different methods and processes are detailed.

The ebook comes in two versions, one version includes instructions to grow the most commonly grown microgreens. The second includes access the microgreen vault, a database containing more varieties and information with images taken throughout the stages of growth.

Video Courses for the Home Grower

The Home Microgreens Video Course is perfect for the person that wants to grow one or more trays of microgreens for home use. Trays of microgreens also make great gifts! 

The course includes short, easy to follow videos and checklist for each step along the way.

Step-by-step video instructions are included for the most commonly grown microgreen varieties. 

Grow for Profit Course

Do you want to learn how to grow microgreens for profit? Grow microgreens as a side hustle, retirement income, or maybe even as an occupation. 

It's possible to earn a few hundred to thousands of dollars a month. 

The Grow for Profit Video Course shows you what is involved to set up a microgreens business, how to setup your grow area, and instructions on how to grow many different varieties. 

The Home Microgreens Store

The Home Microgreen Store has all the supplies you need to grow microgreens at home. 

We stock complete microgreen kits, trays, professional potting soil, miscellaneous equipment and of course microgreens seeds.

Microgreen kits make great gifts, home school or rainy day projects, and are fun for the whole family.

Instructions are included as well as email support.

Our kit and seed prices are very competitive if not the lowest on the internet.