BirdingPath
Tools

Hummingbird nectar calculator

The recipe is simple — 4 parts water to 1 part white sugar, no red dye, no honey. Scale it to any batch below, and get the exact amounts plus how often to swap it out.

2cups (473 ml)
Water
2 cups
473 ml
White sugar
½ cups
8 tbsp · 100 g

Make it

  1. Mix ½ cup sugar into 2 cups hot water until fully dissolved.
  2. Let it cool to room temperature before filling the feeder.
  3. No red dye, no honey, no substitutes — plain white sugar only.
  4. Store extra in the fridge up to a week.

Change it often: every 4-5 days in mild weather, and every 2 days once it's above ~85 °F (29 °C) — cloudy nectar has spoiled and can harm birds. Rinse the feeder each refill.

Common 4:1 batches

Finished batchWaterWhite sugar
1¼ cups1 cup¼ cup
2½ cups2 cups½ cup
5 cups4 cups1 cup

Cleaning rhythm: replace nectar every 1–2 days in hot weather and every few days in milder weather; discard it immediately if cloudy or moldy. Wash ports and reservoir before refilling.

What to put it in

Nectar spoils fast in heat, so the feeder that gets cleaned is the one that comes apart. These are our two highest-scored on exactly that.

Compare all hummingbird feeders

Keeping it clean between batches

Nectar spoils fast in heat, mold starts in the ports rather than the reservoir, and ants find a feeder before the hummingbirds do. These are the two we score highest for keeping one usable between batches.

Compare all nectar & feeder care

Want more visitors? How to attract hummingbirds · Best hummingbird feeders, compared